content/browser/web_contents/web_contents_impl.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
   6 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
   7
   8 #include <map>
   9 #include <set>
  10 #include <string>
  11
  12 #include "base/compiler_specific.h"
  13 #include "base/containers/scoped_ptr_hash_map.h"
  14 #include "base/gtest_prod_util.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/observer_list.h"
  17 #include "base/process/process.h"
  18 #include "base/values.h"
  19 #include "content/browser/frame_host/frame_tree.h"
  20 #include "content/browser/frame_host/navigation_controller_delegate.h"
  21 #include "content/browser/frame_host/navigation_controller_impl.h"
  22 #include "content/browser/frame_host/navigator_delegate.h"
  23 #include "content/browser/frame_host/render_frame_host_delegate.h"
  24 #include "content/browser/frame_host/render_frame_host_manager.h"
  25 #include "content/browser/media/audio_state_provider.h"
  26 #include "content/browser/renderer_host/render_view_host_delegate.h"
  27 #include "content/browser/renderer_host/render_view_host_impl.h"
  28 #include "content/browser/renderer_host/render_widget_host_delegate.h"
  29 #include "content/common/accessibility_mode_enums.h"
  30 #include "content/common/content_export.h"
  31 #include "content/public/browser/color_chooser.h"
  32 #include "content/public/browser/notification_observer.h"
  33 #include "content/public/browser/notification_registrar.h"
  34 #include "content/public/browser/web_contents.h"
  35 #include "content/public/common/renderer_preferences.h"
  36 #include "content/public/common/resource_type.h"
  37 #include "content/public/common/three_d_api_types.h"
  38 #include "net/base/load_states.h"
  39 #include "net/http/http_response_headers.h"
  40 #include "third_party/WebKit/public/web/WebDragOperation.h"
  41 #include "ui/base/page_transition_types.h"
  42 #include "ui/gfx/geometry/rect_f.h"
  43 #include "ui/gfx/geometry/size.h"
  44
  45 struct BrowserPluginHostMsg_ResizeGuest_Params;
  46 struct ViewHostMsg_DateTimeDialogValue_Params;
  47
  48 namespace content {
  49 class BrowserPluginEmbedder;
  50 class BrowserPluginGuest;
  51 class BrowserPluginGuestManager;
  52 class DateTimeChooserAndroid;
  53 class DownloadItem;
  54 class GeolocationServiceContext;
  55 class InterstitialPageImpl;
  56 class JavaScriptDialogManager;
  57 class ManifestManagerHost;
  58 class MediaWebContentsObserver;
  59 class PluginContentOriginWhitelist;
  60 class PowerSaveBlocker;
  61 class RenderViewHost;
  62 class RenderViewHostDelegateView;
  63 class RenderWidgetHostImpl;
  64 class SavePackage;
  65 class ScreenOrientationDispatcherHost;
  66 class SiteInstance;
  67 class TestWebContents;
  68 class WebContentsAudioMuter;
  69 class WebContentsDelegate;
  70 class WebContentsImpl;
  71 class WebContentsObserver;
  72 class WebContentsView;
  73 class WebContentsViewDelegate;
  74 struct AXEventNotificationDetails;
  75 struct ColorSuggestion;
  76 struct FaviconURL;
  77 struct LoadNotificationDetails;
  78 struct ResourceRedirectDetails;
  79 struct ResourceRequestDetails;
  80
  81 #if defined(OS_ANDROID)
  82 class WebContentsAndroid;
  83 #endif
  84
  85 // Factory function for the implementations that content knows about. Takes
  86 // ownership of |delegate|.
  87 WebContentsView* CreateWebContentsView(
  88     WebContentsImpl* web_contents,
  89     WebContentsViewDelegate* delegate,
  90     RenderViewHostDelegateView** render_view_host_delegate_view);
  91
  92 class CONTENT_EXPORT WebContentsImpl
  93     : public NON_EXPORTED_BASE(WebContents),
  94       public NON_EXPORTED_BASE(RenderFrameHostDelegate),
  95       public RenderViewHostDelegate,
  96       public RenderWidgetHostDelegate,
  97       public RenderFrameHostManager::Delegate,
  98       public NotificationObserver,
  99       public NON_EXPORTED_BASE(NavigationControllerDelegate),
 100       public NON_EXPORTED_BASE(NavigatorDelegate) {
 101  public:
 102   class FriendZone;
 103
 104   ~WebContentsImpl() override;
 105
 106   static WebContentsImpl* CreateWithOpener(
 107       const WebContents::CreateParams& params,
 108       WebContentsImpl* opener);
 109
 110   static std::vector<WebContentsImpl*> GetAllWebContents();
 111
 112   // Returns the opener WebContentsImpl, if any. This can be set to null if the
 113   // opener is closed or the page clears its window.opener.
 114   WebContentsImpl* opener() const { return opener_; }
 115
 116   // Creates a swapped out RenderView. This is used by the browser plugin to
 117   // create a swapped out RenderView in the embedder render process for the
 118   // guest, to expose the guest's window object to the embedder.
 119   // This returns the routing ID of the newly created swapped out RenderView.
 120   int CreateSwappedOutRenderView(SiteInstance* instance);
 121
 122   // Complex initialization here. Specifically needed to avoid having
 123   // members call back into our virtual functions in the constructor.
 124   virtual void Init(const WebContents::CreateParams& params);
 125
 126   // Returns the SavePackage which manages the page saving job. May be NULL.
 127   SavePackage* save_package() const { return save_package_.get(); }
 128
 129 #if defined(OS_ANDROID)
 130   // In Android WebView, the RenderView needs created even there is no
 131   // navigation entry, this allows Android WebViews to use
 132   // javascript: URLs that load into the DOMWindow before the first page
 133   // load. This is not safe to do in any context that a web page could get a
 134   // reference to the DOMWindow before the first page load.
 135   bool CreateRenderViewForInitialEmptyDocument();
 136 #endif
 137
 138   // Expose the render manager for testing.
 139   // TODO(creis): Remove this now that we can get to it via FrameTreeNode.
 140   RenderFrameHostManager* GetRenderManagerForTesting();
 141
 142   // Returns guest browser plugin object, or NULL if this WebContents is not a
 143   // guest.
 144   BrowserPluginGuest* GetBrowserPluginGuest() const;
 145
 146   // Sets a BrowserPluginGuest object for this WebContents. If this WebContents
 147   // has a BrowserPluginGuest then that implies that it is being hosted by
 148   // a BrowserPlugin object in an embedder renderer process.
 149   void SetBrowserPluginGuest(BrowserPluginGuest* guest);
 150
 151   // Returns embedder browser plugin object, or NULL if this WebContents is not
 152   // an embedder.
 153   BrowserPluginEmbedder* GetBrowserPluginEmbedder() const;
 154
 155   // Creates a BrowserPluginEmbedder object for this WebContents if one doesn't
 156   // already exist.
 157   void CreateBrowserPluginEmbedderIfNecessary();
 158
 159   // Gets the current fullscreen render widget's routing ID. Returns
 160   // MSG_ROUTING_NONE when there is no fullscreen render widget.
 161   int GetFullscreenWidgetRoutingID() const;
 162
 163   // Invoked when visible SSL state (as defined by SSLStatus) changes.
 164   void DidChangeVisibleSSLState();
 165
 166   // Informs the render view host and the BrowserPluginEmbedder, if present, of
 167   // a Drag Source End.
 168   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
 169       int screen_y, blink::WebDragOperation operation);
 170
 171   // A response has been received for a resource request.
 172   void DidGetResourceResponseStart(
 173       const ResourceRequestDetails& details);
 174
 175   // A redirect was received while requesting a resource.
 176   void DidGetRedirectForResourceRequest(
 177       RenderFrameHost* render_frame_host,
 178       const ResourceRedirectDetails& details);
 179
 180   // Notify observers that the web contents has been focused.
 181   void NotifyWebContentsFocused();
 182
 183   WebContentsView* GetView() const;
 184
 185   ScreenOrientationDispatcherHost* screen_orientation_dispatcher_host() {
 186     return screen_orientation_dispatcher_host_.get();
 187   }
 188
 189   bool should_normally_be_visible() { return should_normally_be_visible_; }
 190
 191   // Indicate if the window has been occluded, and pass this to the views, only
 192   // if there is no active capture going on (otherwise it is dropped on the
 193   // floor).
 194   void WasOccluded();
 195   void WasUnOccluded();
 196
 197   // Broadcasts the mode change to all frames.
 198   void SetAccessibilityMode(AccessibilityMode mode);
 199
 200   // Adds the given accessibility mode to the current accessibility mode
 201   // bitmap.
 202   void AddAccessibilityMode(AccessibilityMode mode);
 203
 204   // Removes the given accessibility mode from the current accessibility
 205   // mode bitmap, managing the bits that are shared with other modes such
 206   // that a bit will only be turned off when all modes that depend on it
 207   // have been removed.
 208   void RemoveAccessibilityMode(AccessibilityMode mode);
 209
 210   // Request a one-time snapshot of the accessibility tree without changing
 211   // the accessibility mode.
 212   typedef base::Callback<void(const ui::AXTreeUpdate&)>
 213       AXTreeSnapshotCallback;
 214   void RequestAXTreeSnapshot(AXTreeSnapshotCallback callback);
 215
 216   // Clear the navigation transition data when the user navigates back to Chrome
 217   // from a native app.
 218   void ClearNavigationTransitionData();
 219
 220   // WebContents ------------------------------------------------------
 221   WebContentsDelegate* GetDelegate() override;
 222   void SetDelegate(WebContentsDelegate* delegate) override;
 223   NavigationControllerImpl& GetController() override;
 224   const NavigationControllerImpl& GetController() const override;
 225   BrowserContext* GetBrowserContext() const override;
 226   const GURL& GetURL() const override;
 227   const GURL& GetVisibleURL() const override;
 228   const GURL& GetLastCommittedURL() const override;
 229   RenderProcessHost* GetRenderProcessHost() const override;
 230   RenderFrameHostImpl* GetMainFrame() override;
 231   RenderFrameHostImpl* GetFocusedFrame() override;
 232   void ForEachFrame(
 233       const base::Callback<void(RenderFrameHost*)>& on_frame) override;
 234   void SendToAllFrames(IPC::Message* message) override;
 235   RenderViewHostImpl* GetRenderViewHost() const override;
 236   int GetRoutingID() const override;
 237   RenderWidgetHostView* GetRenderWidgetHostView() const override;
 238   RenderWidgetHostView* GetFullscreenRenderWidgetHostView() const override;
 239   SkColor GetThemeColor() const override;
 240   WebUI* CreateWebUI(const GURL& url) override;
 241   WebUI* GetWebUI() const override;
 242   WebUI* GetCommittedWebUI() const override;
 243   void SetUserAgentOverride(const std::string& override) override;
 244   const std::string& GetUserAgentOverride() const override;
 245   void EnableTreeOnlyAccessibilityMode() override;
 246   bool IsTreeOnlyAccessibilityModeForTesting() const override;
 247   bool IsFullAccessibilityModeForTesting() const override;
 248 #if defined(OS_WIN)
 249   void SetParentNativeViewAccessible(
 250       gfx::NativeViewAccessible accessible_parent) override;
 251 #endif
 252   const base::string16& GetTitle() const override;
 253   int32 GetMaxPageID() override;
 254   int32 GetMaxPageIDForSiteInstance(SiteInstance* site_instance) override;
 255   SiteInstanceImpl* GetSiteInstance() const override;
 256   SiteInstanceImpl* GetPendingSiteInstance() const override;
 257   bool IsLoading() const override;
 258   bool IsLoadingToDifferentDocument() const override;
 259   bool IsWaitingForResponse() const override;
 260   const net::LoadStateWithParam& GetLoadState() const override;
 261   const base::string16& GetLoadStateHost() const override;
 262   uint64 GetUploadSize() const override;
 263   uint64 GetUploadPosition() const override;
 264   std::set<GURL> GetSitesInTab() const override;
 265   const std::string& GetEncoding() const override;
 266   bool DisplayedInsecureContent() const override;
 267   void IncrementCapturerCount(const gfx::Size& capture_size) override;
 268   void DecrementCapturerCount() override;
 269   int GetCapturerCount() const override;
 270   bool IsAudioMuted() const override;
 271   void SetAudioMuted(bool mute) override;
 272   bool IsCrashed() const override;
 273   void SetIsCrashed(base::TerminationStatus status, int error_code) override;
 274   base::TerminationStatus GetCrashedStatus() const override;
 275   bool IsBeingDestroyed() const override;
 276   void NotifyNavigationStateChanged(InvalidateTypes changed_flags) override;
 277   base::TimeTicks GetLastActiveTime() const override;
 278   void WasShown() override;
 279   void WasHidden() override;
 280   bool NeedToFireBeforeUnload() override;
 281   void DispatchBeforeUnload(bool for_cross_site_transition) override;
 282   void Stop() override;
 283   WebContents* Clone() override;
 284   void ReloadFocusedFrame(bool ignore_cache) override;
 285   void Undo() override;
 286   void Redo() override;
 287   void Cut() override;
 288   void Copy() override;
 289   void CopyToFindPboard() override;
 290   void Paste() override;
 291   void PasteAndMatchStyle() override;
 292   void Delete() override;
 293   void SelectAll() override;
 294   void Unselect() override;
 295   void Replace(const base::string16& word) override;
 296   void ReplaceMisspelling(const base::string16& word) override;
 297   void NotifyContextMenuClosed(
 298       const CustomContextMenuContext& context) override;
 299   void ExecuteCustomContextMenuCommand(
 300       int action,
 301       const CustomContextMenuContext& context) override;
 302   gfx::NativeView GetNativeView() override;
 303   gfx::NativeView GetContentNativeView() override;
 304   gfx::NativeWindow GetTopLevelNativeWindow() override;
 305   gfx::Rect GetContainerBounds() override;
 306   gfx::Rect GetViewBounds() override;
 307   DropData* GetDropData() override;
 308   void Focus() override;
 309   void SetInitialFocus() override;
 310   void StoreFocus() override;
 311   void RestoreFocus() override;
 312   void FocusThroughTabTraversal(bool reverse) override;
 313   bool ShowingInterstitialPage() const override;
 314   InterstitialPage* GetInterstitialPage() const override;
 315   bool IsSavable() override;
 316   void OnSavePage() override;
 317   bool SavePage(const base::FilePath& main_file,
 318                 const base::FilePath& dir_path,
 319                 SavePageType save_type) override;
 320   void SaveFrame(const GURL& url, const Referrer& referrer) override;
 321   void SaveFrameWithHeaders(const GURL& url,
 322                             const Referrer& referrer,
 323                             const std::string& headers) override;
 324   void GenerateMHTML(const base::FilePath& file,
 325                      const base::Callback<void(int64)>& callback) override;
 326   const std::string& GetContentsMimeType() const override;
 327   bool WillNotifyDisconnection() const override;
 328   void SetOverrideEncoding(const std::string& encoding) override;
 329   void ResetOverrideEncoding() override;
 330   RendererPreferences* GetMutableRendererPrefs() override;
 331   void Close() override;
 332   void SystemDragEnded() override;
 333   void UserGestureDone() override;
 334   void SetClosedByUserGesture(bool value) override;
 335   bool GetClosedByUserGesture() const override;
 336   void ViewSource() override;
 337   void ViewFrameSource(const GURL& url, const PageState& page_state) override;
 338   int GetMinimumZoomPercent() const override;
 339   int GetMaximumZoomPercent() const override;
 340   void ResetPageScale() override;
 341   gfx::Size GetPreferredSize() const override;
 342   bool GotResponseToLockMouseRequest(bool allowed) override;
 343   bool HasOpener() const override;
 344   WebContents* GetOpener() const override;
 345   void DidChooseColorInColorChooser(SkColor color) override;
 346   void DidEndColorChooser() override;
 347   int DownloadImage(const GURL& url,
 348                     bool is_favicon,
 349                     uint32_t max_bitmap_size,
 350                     bool bypass_cache,
 351                     const ImageDownloadCallback& callback) override;
 352   bool IsSubframe() const override;
 353   void Find(int request_id,
 354             const base::string16& search_text,
 355             const blink::WebFindOptions& options) override;
 356   void StopFinding(StopFindAction action) override;
 357   void InsertCSS(const std::string& css) override;
 358   bool WasRecentlyAudible() override;
 359   void GetManifest(const GetManifestCallback&) override;
 360   void ExitFullscreen() override;
 361   void ResumeLoadingCreatedWebContents() override;
 362 #if defined(OS_ANDROID)
 363   base::android::ScopedJavaLocalRef<jobject> GetJavaWebContents() override;
 364   virtual WebContentsAndroid* GetWebContentsAndroid();
 365 #elif defined(OS_MACOSX)
 366   void SetAllowOtherViews(bool allow) override;
 367   bool GetAllowOtherViews() override;
 368 #endif
 369
 370   // Implementation of PageNavigator.
 371   WebContents* OpenURL(const OpenURLParams& params) override;
 372
 373   // Implementation of IPC::Sender.
 374   bool Send(IPC::Message* message) override;
 375
 376   // RenderFrameHostDelegate ---------------------------------------------------
 377   bool OnMessageReceived(RenderFrameHost* render_frame_host,
 378                          const IPC::Message& message) override;
 379   const GURL& GetMainFrameLastCommittedURL() const override;
 380   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
 381   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
 382   void SwappedOut(RenderFrameHost* render_frame_host) override;
 383   void DidDeferAfterResponseStarted(
 384       const TransitionLayerData& transition_data) override;
 385   bool WillHandleDeferAfterResponseStarted() override;
 386   void WorkerCrashed(RenderFrameHost* render_frame_host) override;
 387   void ShowContextMenu(RenderFrameHost* render_frame_host,
 388                        const ContextMenuParams& params) override;
 389   void RunJavaScriptMessage(RenderFrameHost* render_frame_host,
 390                             const base::string16& message,
 391                             const base::string16& default_prompt,
 392                             const GURL& frame_url,
 393                             JavaScriptMessageType type,
 394                             IPC::Message* reply_msg) override;
 395   void RunBeforeUnloadConfirm(RenderFrameHost* render_frame_host,
 396                               const base::string16& message,
 397                               bool is_reload,
 398                               IPC::Message* reply_msg) override;
 399   void DidAccessInitialDocument() override;
 400   void DidChangeName(RenderFrameHost* render_frame_host,
 401                      const std::string& name) override;
 402   void DidDisownOpener(RenderFrameHost* render_frame_host) override;
 403   void DocumentOnLoadCompleted(RenderFrameHost* render_frame_host) override;
 404   void UpdateTitle(RenderFrameHost* render_frame_host,
 405                    int32 page_id,
 406                    const base::string16& title,
 407                    base::i18n::TextDirection title_direction) override;
 408   void UpdateEncoding(RenderFrameHost* render_frame_host,
 409                       const std::string& encoding) override;
 410   WebContents* GetAsWebContents() override;
 411   bool IsNeverVisible() override;
 412   AccessibilityMode GetAccessibilityMode() const override;
 413   void AccessibilityEventReceived(
 414       const std::vector<AXEventNotificationDetails>& details) override;
 415   RenderFrameHost* GetGuestByInstanceID(
 416       RenderFrameHost* render_frame_host,
 417       int browser_plugin_instance_id) override;
 418   GeolocationServiceContext* GetGeolocationServiceContext() override;
 419   void EnterFullscreenMode(const GURL& origin) override;
 420   void ExitFullscreenMode() override;
 421   bool ShouldRouteMessageEvent(
 422       RenderFrameHost* target_rfh,
 423       SiteInstance* source_site_instance) const override;
 424   int EnsureOpenerRenderViewsExist(RenderFrameHost* source_rfh) override;
 425 #if defined(OS_WIN)
 426   gfx::NativeViewAccessible GetParentNativeViewAccessible() override;
 427 #endif
 428
 429   // RenderViewHostDelegate ----------------------------------------------------
 430   RenderViewHostDelegateView* GetDelegateView() override;
 431   bool OnMessageReceived(RenderViewHost* render_view_host,
 432                          const IPC::Message& message) override;
 433   // RenderFrameHostDelegate has the same method, so list it there because this
 434   // interface is going away.
 435   // WebContents* GetAsWebContents() override;
 436   gfx::Rect GetRootWindowResizerRect() const override;
 437   void RenderViewCreated(RenderViewHost* render_view_host) override;
 438   void RenderViewReady(RenderViewHost* render_view_host) override;
 439   void RenderViewTerminated(RenderViewHost* render_view_host,
 440                             base::TerminationStatus status,
 441                             int error_code) override;
 442   void RenderViewDeleted(RenderViewHost* render_view_host) override;
 443   void UpdateState(RenderViewHost* render_view_host,
 444                    int32 page_id,
 445                    const PageState& page_state) override;
 446   void UpdateTargetURL(RenderViewHost* render_view_host,
 447                        const GURL& url) override;
 448   void Close(RenderViewHost* render_view_host) override;
 449   void RequestMove(const gfx::Rect& new_bounds) override;
 450   void DidCancelLoading() override;
 451   void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) override;
 452   void RouteCloseEvent(RenderViewHost* rvh) override;
 453   bool AddMessageToConsole(int32 level,
 454                            const base::string16& message,
 455                            int32 line_no,
 456                            const base::string16& source_id) override;
 457   RendererPreferences GetRendererPrefs(
 458       BrowserContext* browser_context) const override;
 459   void OnUserGesture() override;
 460   void OnIgnoredUIEvent() override;
 461   void RendererUnresponsive(RenderViewHost* render_view_host) override;
 462   void RendererResponsive(RenderViewHost* render_view_host) override;
 463   void LoadStateChanged(const GURL& url,
 464                         const net::LoadStateWithParam& load_state,
 465                         uint64 upload_position,
 466                         uint64 upload_size) override;
 467   void Activate() override;
 468   void Deactivate() override;
 469   void LostCapture() override;
 470   void RunFileChooser(RenderViewHost* render_view_host,
 471                       const FileChooserParams& params) override;
 472   bool IsFullscreenForCurrentTab() const override;
 473   blink::WebDisplayMode GetDisplayMode() const override;
 474   void UpdatePreferredSize(const gfx::Size& pref_size) override;
 475   void ResizeDueToAutoResize(const gfx::Size& new_size) override;
 476   void RequestToLockMouse(bool user_gesture,
 477                           bool last_unlocked_by_target) override;
 478   void LostMouseLock() override;
 479   void CreateNewWindow(
 480       int render_process_id,
 481       int route_id,
 482       int main_frame_route_id,
 483       const ViewHostMsg_CreateWindow_Params& params,
 484       SessionStorageNamespace* session_storage_namespace) override;
 485   void CreateNewWidget(int render_process_id,
 486                        int route_id,
 487                        blink::WebPopupType popup_type) override;
 488   void CreateNewFullscreenWidget(int render_process_id, int route_id) override;
 489   void ShowCreatedWindow(int route_id,
 490                          WindowOpenDisposition disposition,
 491                          const gfx::Rect& initial_rect,
 492                          bool user_gesture) override;
 493   void ShowCreatedWidget(int route_id, const gfx::Rect& initial_rect) override;
 494   void ShowCreatedFullscreenWidget(int route_id) override;
 495   void RequestMediaAccessPermission(
 496       const MediaStreamRequest& request,
 497       const MediaResponseCallback& callback) override;
 498   bool CheckMediaAccessPermission(const GURL& security_origin,
 499                                   MediaStreamType type) override;
 500   SessionStorageNamespace* GetSessionStorageNamespace(
 501       SiteInstance* instance) override;
 502   SessionStorageNamespaceMap GetSessionStorageNamespaceMap() override;
 503   FrameTree* GetFrameTree() override;
 504   void SetIsVirtualKeyboardRequested(bool requested) override;
 505   bool IsVirtualKeyboardRequested() override;
 506
 507
 508   // NavigatorDelegate ---------------------------------------------------------
 509
 510   void DidStartProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 511                                const GURL& validated_url,
 512                                bool is_error_page,
 513                                bool is_iframe_srcdoc) override;
 514   void DidStartNavigationTransition(
 515       RenderFrameHostImpl* render_frame_host) override;
 516   void DidFailProvisionalLoadWithError(
 517       RenderFrameHostImpl* render_frame_host,
 518       const FrameHostMsg_DidFailProvisionalLoadWithError_Params& params)
 519       override;
 520   void DidFailLoadWithError(RenderFrameHostImpl* render_frame_host,
 521                             const GURL& url,
 522                             int error_code,
 523                             const base::string16& error_description) override;
 524   void DidCommitProvisionalLoad(RenderFrameHostImpl* render_frame_host,
 525                                 const GURL& url,
 526                                 ui::PageTransition transition_type) override;
 527   void DidNavigateMainFramePreCommit(bool navigation_is_within_page) override;
 528   void DidNavigateMainFramePostCommit(
 529       RenderFrameHostImpl* render_frame_host,
 530       const LoadCommittedDetails& details,
 531       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 532   void DidNavigateAnyFramePostCommit(
 533       RenderFrameHostImpl* render_frame_host,
 534       const LoadCommittedDetails& details,
 535       const FrameHostMsg_DidCommitProvisionalLoad_Params& params) override;
 536   void SetMainFrameMimeType(const std::string& mime_type) override;
 537   bool CanOverscrollContent() const override;
 538   void NotifyChangedNavigationState(InvalidateTypes changed_flags) override;
 539   void AboutToNavigateRenderFrame(
 540       RenderFrameHostImpl* old_host,
 541       RenderFrameHostImpl* new_host) override;
 542   void DidStartNavigationToPendingEntry(
 543       const GURL& url,
 544       NavigationController::ReloadType reload_type) override;
 545   void RequestOpenURL(RenderFrameHostImpl* render_frame_host,
 546                       const OpenURLParams& params) override;
 547   bool ShouldPreserveAbortedURLs() override;
 548   void DidStartLoading(FrameTreeNode* frame_tree_node,
 549                        bool to_different_document) override;
 550   void DidStopLoading() override;
 551   void DidChangeLoadProgress() override;
 552
 553   // RenderWidgetHostDelegate --------------------------------------------------
 554
 555   void RenderWidgetDeleted(RenderWidgetHostImpl* render_widget_host) override;
 556   void RenderWidgetGotFocus(RenderWidgetHostImpl* render_widget_host) override;
 557   void RenderWidgetWasResized(RenderWidgetHostImpl* render_widget_host,
 558                               bool width_changed) override;
 559   void ScreenInfoChanged() override;
 560   bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
 561                               bool* is_keyboard_shortcut) override;
 562   void HandleKeyboardEvent(const NativeWebKeyboardEvent& event) override;
 563   bool HandleWheelEvent(const blink::WebMouseWheelEvent& event) override;
 564   bool PreHandleGestureEvent(const blink::WebGestureEvent& event) override;
 565   void DidSendScreenRects(RenderWidgetHostImpl* rwh) override;
 566   BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() override;
 567   BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager()
 568       override;
 569
 570   // RenderFrameHostManager::Delegate ------------------------------------------
 571
 572   bool CreateRenderViewForRenderManager(
 573       RenderViewHost* render_view_host,
 574       int opener_route_id,
 575       int proxy_routing_id,
 576       bool for_main_frame_navigation) override;
 577   bool CreateRenderFrameForRenderManager(RenderFrameHost* render_frame_host,
 578                                          int parent_routing_id,
 579                                          int proxy_routing_id) override;
 580   void BeforeUnloadFiredFromRenderManager(
 581       bool proceed,
 582       const base::TimeTicks& proceed_time,
 583       bool* proceed_to_fire_unload) override;
 584   void RenderProcessGoneFromRenderManager(
 585       RenderViewHost* render_view_host) override;
 586   void UpdateRenderViewSizeForRenderManager() override;
 587   void CancelModalDialogsForRenderManager() override;
 588   void NotifySwappedFromRenderManager(RenderFrameHost* old_host,
 589                                       RenderFrameHost* new_host,
 590                                       bool is_main_frame) override;
 591   void NotifyMainFrameSwappedFromRenderManager(
 592       RenderViewHost* old_host,
 593       RenderViewHost* new_host) override;
 594   int CreateOpenerRenderViewsForRenderManager(SiteInstance* instance) override;
 595   NavigationControllerImpl& GetControllerForRenderManager() override;
 596   scoped_ptr<WebUIImpl> CreateWebUIForRenderManager(const GURL& url) override;
 597   NavigationEntry* GetLastCommittedNavigationEntryForRenderManager() override;
 598   bool FocusLocationBarByDefault() override;
 599   void SetFocusToLocationBar(bool select_all) override;
 600   bool IsHidden() override;
 601
 602   // NotificationObserver ------------------------------------------------------
 603
 604   void Observe(int type,
 605                const NotificationSource& source,
 606                const NotificationDetails& details) override;
 607
 608   // NavigationControllerDelegate ----------------------------------------------
 609
 610   WebContents* GetWebContents() override;
 611   void NotifyNavigationEntryCommitted(
 612       const LoadCommittedDetails& load_details) override;
 613
 614   // Invoked before a form repost warning is shown.
 615   void NotifyBeforeFormRepostWarningShow() override;
 616
 617   // Activate this WebContents and show a form repost warning.
 618   void ActivateAndShowRepostFormWarningDialog() override;
 619
 620   // Whether the initial empty page of this view has been accessed by another
 621   // page, making it unsafe to show the pending URL. Always false after the
 622   // first commit.
 623   bool HasAccessedInitialDocument() override;
 624
 625   // Updates the max page ID for the current SiteInstance in this
 626   // WebContentsImpl to be at least |page_id|.
 627   void UpdateMaxPageID(int32 page_id) override;
 628
 629   // Updates the max page ID for the given SiteInstance in this WebContentsImpl
 630   // to be at least |page_id|.
 631   void UpdateMaxPageIDForSiteInstance(SiteInstance* site_instance,
 632                                       int32 page_id) override;
 633
 634   // Copy the current map of SiteInstance ID to max page ID from another tab.
 635   // This is necessary when this tab adopts the NavigationEntries from
 636   // |web_contents|.
 637   void CopyMaxPageIDsFrom(WebContents* web_contents) override;
 638
 639   // Called by the NavigationController to cause the WebContentsImpl to navigate
 640   // to the current pending entry. The NavigationController should be called
 641   // back with RendererDidNavigate on success or DiscardPendingEntry on failure.
 642   // The callbacks can be inside of this function, or at some future time.
 643   //
 644   // The entry has a PageID of -1 if newly created (corresponding to navigation
 645   // to a new URL).
 646   //
 647   // If this method returns false, then the navigation is discarded (equivalent
 648   // to calling DiscardPendingEntry on the NavigationController).
 649   bool NavigateToPendingEntry(
 650       NavigationController::ReloadType reload_type) override;
 651
 652   // Sets the history for this WebContentsImpl to |history_length| entries, with
 653   // an offset of |history_offset|.
 654   void SetHistoryOffsetAndLength(int history_offset,
 655                                  int history_length) override;
 656
 657   // Called by InterstitialPageImpl when it creates a RenderFrameHost.
 658   void RenderFrameForInterstitialPageCreated(
 659       RenderFrameHost* render_frame_host) override;
 660
 661   // Sets the passed interstitial as the currently showing interstitial.
 662   // No interstitial page should already be attached.
 663   void AttachInterstitialPage(InterstitialPageImpl* interstitial_page) override;
 664
 665   // Unsets the currently showing interstitial.
 666   void DetachInterstitialPage() override;
 667
 668   // Changes the IsLoading state and notifies the delegate as needed.
 669   // |details| is used to provide details on the load that just finished
 670   // (but can be null if not applicable).
 671   void SetIsLoading(bool is_loading,
 672                     bool to_different_document,
 673                     LoadNotificationDetails* details) override;
 674
 675   typedef base::Callback<void(WebContents*)> CreatedCallback;
 676
 677   // Requests the renderer to move the selection extent to a new position.
 678   void MoveRangeSelectionExtent(const gfx::Point& extent);
 679
 680   // Requests the renderer to select the region between two points in the
 681   // currently focused frame.
 682   void SelectRange(const gfx::Point& base, const gfx::Point& extent);
 683
 684   // Notifies the main frame that it can continue navigation (if it was deferred
 685   // immediately at first response).
 686   void ResumeResponseDeferredAtStart();
 687
 688   // Forces overscroll to be disabled (used by touch emulation).
 689   void SetForceDisableOverscrollContent(bool force_disable);
 690
 691   AudioStateProvider* audio_state_provider() {
 692     return audio_state_provider_.get();
 693   }
 694
 695   bool has_audio_power_save_blocker_for_testing() const {
 696     return audio_power_save_blocker_;
 697   }
 698
 699   bool has_video_power_save_blocker_for_testing() const {
 700     return video_power_save_blocker_;
 701   }
 702
 703 #if defined(ENABLE_BROWSER_CDMS)
 704   MediaWebContentsObserver* media_web_contents_observer() {
 705     return media_web_contents_observer_.get();
 706   }
 707 #endif
 708
 709  private:
 710   friend class WebContentsObserver;
 711   friend class WebContents;  // To implement factory methods.
 712
 713   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
 714   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
 715   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
 716   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
 717                            CrossSiteCantPreemptAfterUnload);
 718   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, PendingContents);
 719   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FrameTreeShape);
 720   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, GetLastActiveTime);
 721   FRIEND_TEST_ALL_PREFIXES(FormStructureBrowserTest, HTMLFiles);
 722   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest, HistoryNavigate);
 723   FRIEND_TEST_ALL_PREFIXES(RenderFrameHostManagerTest, PageDoesBackAndReload);
 724   FRIEND_TEST_ALL_PREFIXES(SitePerProcessBrowserTest, CrossSiteIframe);
 725   FRIEND_TEST_ALL_PREFIXES(SitePerProcessAccessibilityBrowserTest,
 726                            CrossSiteIframeAccessibility);
 727
 728   // So InterstitialPageImpl can access SetIsLoading.
 729   friend class InterstitialPageImpl;
 730
 731   // TODO(brettw) TestWebContents shouldn't exist!
 732   friend class TestWebContents;
 733
 734   class DestructionObserver;
 735
 736   // See WebContents::Create for a description of these parameters.
 737   WebContentsImpl(BrowserContext* browser_context,
 738                   WebContentsImpl* opener);
 739
 740   // Add and remove observers for page navigation notifications. The order in
 741   // which notifications are sent to observers is undefined. Clients must be
 742   // sure to remove the observer before they go away.
 743   void AddObserver(WebContentsObserver* observer);
 744   void RemoveObserver(WebContentsObserver* observer);
 745
 746   // Clears this tab's opener if it has been closed.
 747   void OnWebContentsDestroyed(WebContentsImpl* web_contents);
 748
 749   // Creates and adds to the map a destruction observer watching |web_contents|.
 750   // No-op if such an observer already exists.
 751   void AddDestructionObserver(WebContentsImpl* web_contents);
 752
 753   // Deletes and removes from the map a destruction observer
 754   // watching |web_contents|. No-op if there is no such observer.
 755   void RemoveDestructionObserver(WebContentsImpl* web_contents);
 756
 757   // Traverses all the RenderFrameHosts in the FrameTree and creates a set
 758   // all the unique RenderWidgetHostViews.
 759   std::set<RenderWidgetHostView*> GetRenderWidgetHostViewsInTree();
 760
 761   // Callback function when showing JavaScript dialogs.  Takes in a routing ID
 762   // pair to identify the RenderFrameHost that opened the dialog, because it's
 763   // possible for the RenderFrameHost to be deleted by the time this is called.
 764   void OnDialogClosed(int render_process_id,
 765                       int render_frame_id,
 766                       IPC::Message* reply_msg,
 767                       bool dialog_was_suppressed,
 768                       bool success,
 769                       const base::string16& user_input);
 770
 771   bool OnMessageReceived(RenderViewHost* render_view_host,
 772                          RenderFrameHost* render_frame_host,
 773                          const IPC::Message& message);
 774
 775   // Checks whether render_frame_message_source_ is set to non-null value,
 776   // otherwise it terminates the main frame renderer process.
 777   bool HasValidFrameSource();
 778
 779   // IPC message handlers.
 780   void OnThemeColorChanged(SkColor theme_color);
 781   void OnDidLoadResourceFromMemoryCache(const GURL& url,
 782                                         const std::string& security_info,
 783                                         const std::string& http_request,
 784                                         const std::string& mime_type,
 785                                         ResourceType resource_type);
 786   void OnDidDisplayInsecureContent();
 787   void OnDidRunInsecureContent(const std::string& security_origin,
 788                                const GURL& target_url);
 789   void OnDocumentLoadedInFrame();
 790   void OnDidFinishLoad(const GURL& url);
 791   void OnGoToEntryAtOffset(int offset);
 792   void OnUpdateZoomLimits(int minimum_percent,
 793                           int maximum_percent);
 794   void OnEnumerateDirectory(int request_id, const base::FilePath& path);
 795
 796   void OnRegisterProtocolHandler(const std::string& protocol,
 797                                  const GURL& url,
 798                                  const base::string16& title,
 799                                  bool user_gesture);
 800   void OnUnregisterProtocolHandler(const std::string& protocol,
 801                                    const GURL& url,
 802                                    bool user_gesture);
 803   void OnFindReply(int request_id,
 804                    int number_of_matches,
 805                    const gfx::Rect& selection_rect,
 806                    int active_match_ordinal,
 807                    bool final_update);
 808 #if defined(OS_ANDROID)
 809   void OnFindMatchRectsReply(int version,
 810                              const std::vector<gfx::RectF>& rects,
 811                              const gfx::RectF& active_rect);
 812
 813   void OnOpenDateTimeDialog(
 814       const ViewHostMsg_DateTimeDialogValue_Params& value);
 815 #endif
 816   void OnDomOperationResponse(const std::string& json_string,
 817                               int automation_id);
 818   void OnAppCacheAccessed(const GURL& manifest_url, bool blocked_by_policy);
 819   void OnOpenColorChooser(int color_chooser_id,
 820                           SkColor color,
 821                           const std::vector<ColorSuggestion>& suggestions);
 822   void OnEndColorChooser(int color_chooser_id);
 823   void OnSetSelectedColorInColorChooser(int color_chooser_id, SkColor color);
 824   void OnWebUISend(const GURL& source_url,
 825                    const std::string& name,
 826                    const base::ListValue& args);
 827 #if defined(ENABLE_PLUGINS)
 828   void OnPepperPluginHung(int plugin_child_id,
 829                           const base::FilePath& path,
 830                           bool is_hung);
 831   void OnPluginCrashed(const base::FilePath& plugin_path,
 832                        base::ProcessId plugin_pid);
 833   void OnRequestPpapiBrokerPermission(int routing_id,
 834                                       const GURL& url,
 835                                       const base::FilePath& plugin_path);
 836
 837   // Callback function when requesting permission to access the PPAPI broker.
 838   // |result| is true if permission was granted.
 839   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 840
 841   void OnBrowserPluginMessage(RenderFrameHost* render_frame_host,
 842                               const IPC::Message& message);
 843 #endif  // defined(ENABLE_PLUGINS)
 844   void OnDidDownloadImage(int id,
 845                           int http_status_code,
 846                           const GURL& image_url,
 847                           const std::vector<SkBitmap>& bitmaps,
 848                           const std::vector<gfx::Size>& original_bitmap_sizes);
 849   void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
 850   void OnFirstVisuallyNonEmptyPaint();
 851   void OnMediaPlayingNotification(int64 player_cookie,
 852                                   bool has_video,
 853                                   bool has_audio,
 854                                   bool is_remote);
 855   void OnMediaPausedNotification(int64 player_cookie);
 856   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
 857                                const base::string16& main_text,
 858                                const base::string16& sub_text);
 859   void OnHideValidationMessage();
 860   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 861
 862   // Called by derived classes to indicate that we're no longer waiting for a
 863   // response. This won't actually update the throbber, but it will get picked
 864   // up at the next animation step if the throbber is going.
 865   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
 866
 867   // Navigation helpers --------------------------------------------------------
 868   //
 869   // These functions are helpers for Navigate() and DidNavigate().
 870
 871   // Handles post-navigation tasks in DidNavigate AFTER the entry has been
 872   // committed to the navigation controller. Note that the navigation entry is
 873   // not provided since it may be invalid/changed after being committed. The
 874   // current navigation entry is in the NavigationController at this point.
 875
 876   // If our controller was restored, update the max page ID associated with the
 877   // given RenderViewHost to be larger than the number of restored entries.
 878   // This is called in CreateRenderView before any navigations in the RenderView
 879   // have begun, to prevent any races in updating RenderView::next_page_id.
 880   void UpdateMaxPageIDIfNecessary(RenderViewHost* rvh);
 881
 882   // Saves the given title to the navigation entry and does associated work. It
 883   // will update history and the view for the new title, and also synthesize
 884   // titles for file URLs that have none (so we require that the URL of the
 885   // entry already be set).
 886   //
 887   // This is used as the backend for state updates, which include a new title,
 888   // or the dedicated set title message. It returns true if the new title is
 889   // different and was therefore updated.
 890   bool UpdateTitleForEntry(NavigationEntryImpl* entry,
 891                            const base::string16& title);
 892
 893   // Recursively creates swapped out RenderViews for this tab's opener chain
 894   // (including this tab) in the given SiteInstance, allowing other tabs to send
 895   // cross-process JavaScript calls to their opener(s).  Returns the route ID of
 896   // this tab's RenderView for |instance|.
 897   int CreateOpenerRenderViews(SiteInstance* instance);
 898
 899   // Helper for CreateNewWidget/CreateNewFullscreenWidget.
 900   void CreateNewWidget(int render_process_id,
 901                        int route_id,
 902                        bool is_fullscreen,
 903                        blink::WebPopupType popup_type);
 904
 905   // Helper for ShowCreatedWidget/ShowCreatedFullscreenWidget.
 906   void ShowCreatedWidget(int route_id,
 907                          bool is_fullscreen,
 908                          const gfx::Rect& initial_rect);
 909
 910   // Finds the new RenderWidgetHost and returns it. Note that this can only be
 911   // called once as this call also removes it from the internal map.
 912   RenderWidgetHostView* GetCreatedWidget(int route_id);
 913
 914   // Finds the new WebContentsImpl by route_id, initializes it for
 915   // renderer-initiated creation, and returns it. Note that this can only be
 916   // called once as this call also removes it from the internal map.
 917   WebContentsImpl* GetCreatedWindow(int route_id);
 918
 919   // Tracking loading progress -------------------------------------------------
 920
 921   // Resets the tracking state of the current load progress.
 922   void ResetLoadProgressState();
 923
 924   // Notifies the delegate that the load progress was updated.
 925   void SendChangeLoadProgress();
 926
 927   // Misc non-view stuff -------------------------------------------------------
 928
 929   // Sets the history for a specified RenderViewHost to |history_length|
 930   // entries, with an offset of |history_offset|.
 931   void SetHistoryOffsetAndLengthForView(RenderViewHost* render_view_host,
 932                                         int history_offset,
 933                                         int history_length);
 934
 935   // Helper functions for sending notifications.
 936   void NotifyViewSwapped(RenderViewHost* old_host, RenderViewHost* new_host);
 937   void NotifyFrameSwapped(RenderFrameHost* old_host, RenderFrameHost* new_host);
 938   void NotifyDisconnected();
 939
 940   void SetEncoding(const std::string& encoding);
 941
 942   // TODO(creis): This should take in a FrameTreeNode to know which node's
 943   // render manager to return.  For now, we just return the root's.
 944   RenderFrameHostManager* GetRenderManager() const;
 945
 946   // Removes browser plugin embedder if there is one.
 947   void RemoveBrowserPluginEmbedder();
 948
 949   // Clear |render_frame_host|'s tracking entry for its power save blockers.
 950   void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
 951
 952   // Clear tracking entries for all RenderFrameHosts, clears
 953   // |audio_power_save_blocker_| and |video_power_save_blocker_|.
 954   void ClearAllPowerSaveBlockers();
 955
 956   // Creates an audio or video power save blocker respectively.
 957   void CreateAudioPowerSaveBlocker();
 958   void CreateVideoPowerSaveBlocker();
 959
 960   // Releases the audio power save blockers if |active_audio_players_| is empty.
 961   // Likewise, releases the video power save blockers if |active_video_players_|
 962   // is empty.
 963   void MaybeReleasePowerSaveBlockers();
 964
 965   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
 966   gfx::Size GetSizeForNewRenderView();
 967
 968   void OnFrameRemoved(RenderFrameHost* render_frame_host);
 969
 970   // Helper method that's called whenever |preferred_size_| or
 971   // |preferred_size_for_capture_| changes, to propagate the new value to the
 972   // |delegate_|.
 973   void OnPreferredSizeChanged(const gfx::Size& old_size);
 974
 975   // Helper methods for adding or removing player entries in |player_map| under
 976   // the key |render_frame_message_source_|.
 977   typedef std::vector<int64> PlayerList;
 978   typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
 979   void AddMediaPlayerEntry(int64 player_cookie,
 980                            ActiveMediaPlayerMap* player_map);
 981   void RemoveMediaPlayerEntry(int64 player_cookie,
 982                               ActiveMediaPlayerMap* player_map);
 983   // Removes all entries from |player_map| for |render_frame_host|.
 984   void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
 985                                    ActiveMediaPlayerMap* player_map);
 986
 987   // Data for core operation ---------------------------------------------------
 988
 989   // Delegate for notifying our owner about stuff. Not owned by us.
 990   WebContentsDelegate* delegate_;
 991
 992   // Handles the back/forward list and loading.
 993   NavigationControllerImpl controller_;
 994
 995   // The corresponding view.
 996   scoped_ptr<WebContentsView> view_;
 997
 998   // The view of the RVHD. Usually this is our WebContentsView implementation,
 999   // but if an embedder uses a different WebContentsView, they'll need to
1000   // provide this.
1001   RenderViewHostDelegateView* render_view_host_delegate_view_;
1002
1003   // Tracks created WebContentsImpl objects that have not been shown yet. They
1004   // are identified by the route ID passed to CreateNewWindow.
1005   typedef std::map<int, WebContentsImpl*> PendingContents;
1006   PendingContents pending_contents_;
1007
1008   // These maps hold on to the widgets that we created on behalf of the renderer
1009   // that haven't shown yet.
1010   typedef std::map<int, RenderWidgetHostView*> PendingWidgetViews;
1011   PendingWidgetViews pending_widget_views_;
1012
1013   typedef std::map<WebContentsImpl*, DestructionObserver*> DestructionObservers;
1014   DestructionObservers destruction_observers_;
1015
1016   // A list of observers notified when page state changes. Weak references.
1017   // This MUST be listed above frame_tree_ since at destruction time the
1018   // latter might cause RenderViewHost's destructor to call us and we might use
1019   // the observer list then.
1020   ObserverList<WebContentsObserver> observers_;
1021
1022   // The tab that opened this tab, if any.  Will be set to null if the opener
1023   // is closed.
1024   WebContentsImpl* opener_;
1025
1026   // True if this tab was opened by another tab. This is not unset if the opener
1027   // is closed.
1028   bool created_with_opener_;
1029
1030 #if defined(OS_WIN)
1031   gfx::NativeViewAccessible accessible_parent_;
1032 #endif
1033
1034   // Helper classes ------------------------------------------------------------
1035
1036   // Tracking variables and associated power save blockers for media playback.
1037   ActiveMediaPlayerMap active_audio_players_;
1038   ActiveMediaPlayerMap active_video_players_;
1039   scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
1040   scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
1041
1042   // Tells whether this WebContents is actively producing sound.
1043   // Order is important: the |frame_tree_| destruction uses
1044   // |audio_state_provider_|.
1045   scoped_ptr<AudioStateProvider> audio_state_provider_;
1046
1047   // Manages the frame tree of the page and process swaps in each node.
1048   FrameTree frame_tree_;
1049
1050   // SavePackage, lazily created.
1051   scoped_refptr<SavePackage> save_package_;
1052
1053   // Data for loading state ----------------------------------------------------
1054
1055   // Indicates whether we're currently loading a resource.
1056   bool is_loading_;
1057
1058   // Indicates whether the current load is to a different document. Only valid
1059   // if is_loading_ is true.
1060   bool is_load_to_different_document_;
1061
1062   // Indicates if the tab is considered crashed.
1063   base::TerminationStatus crashed_status_;
1064   int crashed_error_code_;
1065
1066   // Whether this WebContents is waiting for a first-response for the
1067   // main resource of the page. This controls whether the throbber state is
1068   // "waiting" or "loading."
1069   bool waiting_for_response_;
1070
1071   // Map of SiteInstance ID to max page ID for this tab. A page ID is specific
1072   // to a given tab and SiteInstance, and must be valid for the lifetime of the
1073   // WebContentsImpl.
1074   std::map<int32, int32> max_page_ids_;
1075
1076   // The current load state and the URL associated with it.
1077   net::LoadStateWithParam load_state_;
1078   base::string16 load_state_host_;
1079
1080   base::TimeTicks loading_last_progress_update_;
1081
1082   // Upload progress, for displaying in the status bar.
1083   // Set to zero when there is no significant upload happening.
1084   uint64 upload_size_;
1085   uint64 upload_position_;
1086
1087   // Data for current page -----------------------------------------------------
1088
1089   // When a title cannot be taken from any entry, this title will be used.
1090   base::string16 page_title_when_no_navigation_entry_;
1091
1092   // When a navigation occurs, we record its contents MIME type. It can be
1093   // used to check whether we can do something for some special contents.
1094   std::string contents_mime_type_;
1095
1096   // The last reported character encoding, not canonicalized.
1097   std::string last_reported_encoding_;
1098
1099   // The canonicalized character encoding.
1100   std::string canonical_encoding_;
1101
1102   // True if this is a secure page which displayed insecure content.
1103   bool displayed_insecure_content_;
1104
1105   // Whether the initial empty page has been accessed by another page, making it
1106   // unsafe to show the pending URL. Usually false unless another window tries
1107   // to modify the blank page.  Always false after the first commit.
1108   bool has_accessed_initial_document_;
1109
1110   // The theme color for the underlying document as specified
1111   // by theme-color meta tag.
1112   SkColor theme_color_;
1113
1114   // The last published theme color.
1115   SkColor last_sent_theme_color_;
1116
1117   // Data for misc internal state ----------------------------------------------
1118
1119   // When > 0, the WebContents is currently being captured (e.g., for
1120   // screenshots or mirroring); and the underlying RenderWidgetHost should not
1121   // be told it is hidden.
1122   int capturer_count_;
1123
1124   // Tracks whether RWHV should be visible once capturer_count_ becomes zero.
1125   bool should_normally_be_visible_;
1126
1127   // See getter above.
1128   bool is_being_destroyed_;
1129
1130   // Indicates whether we should notify about disconnection of this
1131   // WebContentsImpl. This is used to ensure disconnection notifications only
1132   // happen if a connection notification has happened and that they happen only
1133   // once.
1134   bool notify_disconnection_;
1135
1136   // Pointer to the JavaScript dialog manager, lazily assigned. Used because the
1137   // delegate of this WebContentsImpl is nulled before its destructor is called.
1138   JavaScriptDialogManager* dialog_manager_;
1139
1140   // Set to true when there is an active "before unload" dialog.  When true,
1141   // we've forced the throbber to start in Navigate, and we need to remember to
1142   // turn it off in OnJavaScriptMessageBoxClosed if the navigation is canceled.
1143   bool is_showing_before_unload_dialog_;
1144
1145   // Settings that get passed to the renderer process.
1146   RendererPreferences renderer_preferences_;
1147
1148   // The time that this WebContents was last made active. The initial value is
1149   // the WebContents creation time.
1150   base::TimeTicks last_active_time_;
1151
1152   // See description above setter.
1153   bool closed_by_user_gesture_;
1154
1155   // Minimum/maximum zoom percent.
1156   int minimum_zoom_percent_;
1157   int maximum_zoom_percent_;
1158
1159   // The intrinsic size of the page.
1160   gfx::Size preferred_size_;
1161
1162   // The preferred size for content screen capture.  When |capturer_count_| > 0,
1163   // this overrides |preferred_size_|.
1164   gfx::Size preferred_size_for_capture_;
1165
1166 #if defined(OS_ANDROID)
1167   // Date time chooser opened by this tab.
1168   // Only used in Android since all other platforms use a multi field UI.
1169   scoped_ptr<DateTimeChooserAndroid> date_time_chooser_;
1170 #endif
1171
1172   // Holds information about a current color chooser dialog, if one is visible.
1173   struct ColorChooserInfo {
1174     ColorChooserInfo(int render_process_id,
1175                      int render_frame_id,
1176                      ColorChooser* chooser,
1177                      int identifier);
1178     ~ColorChooserInfo();
1179
1180     int render_process_id;
1181     int render_frame_id;
1182
1183     // Color chooser that was opened by this tab.
1184     scoped_ptr<ColorChooser> chooser;
1185
1186     // A unique identifier for the current color chooser.  Identifiers are
1187     // unique across a renderer process.  This avoids race conditions in
1188     // synchronizing the browser and renderer processes.  For example, if a
1189     // renderer closes one chooser and opens another, and simultaneously the
1190     // user picks a color in the first chooser, the IDs can be used to drop the
1191     // "chose a color" message rather than erroneously tell the renderer that
1192     // the user picked a color in the second chooser.
1193     int identifier;
1194   };
1195
1196   scoped_ptr<ColorChooserInfo> color_chooser_info_;
1197
1198   // Manages the embedder state for browser plugins, if this WebContents is an
1199   // embedder; NULL otherwise.
1200   scoped_ptr<BrowserPluginEmbedder> browser_plugin_embedder_;
1201   // Manages the guest state for browser plugin, if this WebContents is a guest;
1202   // NULL otherwise.
1203   scoped_ptr<BrowserPluginGuest> browser_plugin_guest_;
1204
1205 #if defined(ENABLE_PLUGINS)
1206   // Manages the whitelist of plugin content origins exempt from power saving.
1207   scoped_ptr<PluginContentOriginWhitelist> plugin_content_origin_whitelist_;
1208 #endif
1209
1210   // This must be at the end, or else we might get notifications and use other
1211   // member variables that are gone.
1212   NotificationRegistrar registrar_;
1213
1214   // Used during IPC message dispatching from the RenderView/RenderFrame so that
1215   // the handlers can get a pointer to the RVH through which the message was
1216   // received.
1217   RenderViewHost* render_view_message_source_;
1218   RenderFrameHost* render_frame_message_source_;
1219
1220   // All live RenderWidgetHostImpls that are created by this object and may
1221   // outlive it.
1222   std::set<RenderWidgetHostImpl*> created_widgets_;
1223
1224   // Routing id of the shown fullscreen widget or MSG_ROUTING_NONE otherwise.
1225   int fullscreen_widget_routing_id_;
1226
1227   // At the time the fullscreen widget was being shut down, did it have focus?
1228   // This is used to restore focus to the WebContentsView after both: 1) the
1229   // fullscreen widget is destroyed, and 2) the WebContentsDelegate has
1230   // completed making layout changes to effect an exit from fullscreen mode.
1231   bool fullscreen_widget_had_focus_at_shutdown_;
1232
1233   // Maps the ids of pending image downloads to their callbacks
1234   typedef std::map<int, ImageDownloadCallback> ImageDownloadMap;
1235   ImageDownloadMap image_download_map_;
1236
1237   // Whether this WebContents is responsible for displaying a subframe in a
1238   // different process from its parent page.
1239   bool is_subframe_;
1240
1241   // Whether overscroll should be unconditionally disabled.
1242   bool force_disable_overscroll_content_;
1243
1244   // Whether the last JavaScript dialog shown was suppressed. Used for testing.
1245   bool last_dialog_suppressed_;
1246
1247   scoped_ptr<GeolocationServiceContext> geolocation_service_context_;
1248
1249   scoped_ptr<ScreenOrientationDispatcherHost>
1250       screen_orientation_dispatcher_host_;
1251
1252   scoped_ptr<ManifestManagerHost> manifest_manager_host_;
1253
1254   // The accessibility mode for all frames. This is queried when each frame
1255   // is created, and broadcast to all frames when it changes.
1256   AccessibilityMode accessibility_mode_;
1257
1258   // Created on-demand to mute all audio output from this WebContents.
1259   scoped_ptr<WebContentsAudioMuter> audio_muter_;
1260
1261   bool virtual_keyboard_requested_;
1262
1263 #if defined(ENABLE_BROWSER_CDMS)
1264   // Manages all the media player and CDM managers and forwards IPCs to them.
1265   scoped_ptr<MediaWebContentsObserver> media_web_contents_observer_;
1266 #endif
1267
1268   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
1269
1270   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
1271 };
1272
1273 // Dangerous methods which should never be made part of the public API, so we
1274 // grant their use only to an explicit friend list (c++ attorney/client idiom).
1275 class CONTENT_EXPORT WebContentsImpl::FriendZone {
1276  private:
1277   friend class TestNavigationObserver;
1278   friend class WebContentsAddedObserver;
1279   friend class ContentBrowserSanityChecker;
1280
1281   FriendZone();  // Not instantiable.
1282
1283   // Adds/removes a callback called on creation of each new WebContents.
1284   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
1285   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
1286
1287   DISALLOW_COPY_AND_ASSIGN(FriendZone);
1288 };
1289
1290 }  // namespace content
1291
1292 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_